Actuating device easily assembled and keyboard musical instrument equipped therewith
AssigneeYamaha Corporation
InventorsShigeru Muramatsu, Syuzo Okabe
Life of this patent
Estimating the term…
Abstract
An automatic player piano is equipped with a key actuating device for moving keys without fingering, and the key actuating device has a retainer embedded in the key bed for adapting plungers of solenoid-operated key actuators to the keys, respectively, wherein the retainer is formed with guide grooves defined between wall portions for permitting sliding portions of the yokes incorporated in the solenoid-operated key actuators therealong, and a worker simply presses the yoke against the wall portions by means of bolts so as to locate the plungers immediately under the associated keys.
Claims14
A keyboard musical instrument for generating tones, comprising:
- plural keys arranged in a lateral direction on a stationary board, and moved with respect to said stationary board for specifying pitches of said tones to be generated;
- a tone generator responsive to motions of said plural keys for generating said tones;
- and
- a key actuating device provided in the vicinity of said plural keys for selectively moving said plural keys without fingering of a human player, and including
- a retainer elongated in said lateral direction, and formed with a guide extending in said lateral direction,
- plural actuators having sliding portions engageable with said guide so as to be moved in said lateral direction and
- a fastener provided between said plural actuators and said retainer and keeping said plural actuators at target positions in proximity to said plural keys, respectively.
Dependencies are inferred from the claim text.